A lattice boltzmann simulation of three-dimensional displacement flow of two immiscible liquids in a square duct

Redapangu, P R and Sahu, Kirti Chandra and Vanka, S P (2013) A lattice boltzmann simulation of three-dimensional displacement flow of two immiscible liquids in a square duct. Journal of Fluids Engineering, 135 (12). pp. 1-8. ISSN 0098-2202

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Abstract

A three-dimensional, multiphase lattice Boltzmann approach is used to study a pressuredriven displacement flow of two immiscible liquids of different densities and viscosities in a square duct. A three-dimensional, 15-velocity (D3Q15) lattice model is used. The effects of channel inclination, viscosity, and density contrasts are investigated. The contours of the density and the average viscosity profiles in different planes are plotted and compared with those obtained in a two-dimensional channel. We demonstrate that the flow dynamics in a three-dimensional channel is quite different as compared to that of a two-dimensional channel. We found that the flow is relatively more coherent in a three-dimensional channel than that in a two-dimensional channel. A new screw-type instability is seen in the three-dimensional channel that cannot be observed in the two-dimensional channel.

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IITH Creators:

IITH Creators	ORCiD
Sahu, Kirti Chandra	http://orcid.org/0000-0002-7357-1141

Item Type:

Article

Uncontrolled Keywords:

Different densities; Immiscible liquids; Lattice boltzmann approaches; Lattice Boltzmann simulations; Lattice modeling; Three-dimensional channels; Three-dimensional displacements; Two dimensional channels

Subjects:

Chemical Engineering > Biochemical Engineering

Divisions:

Department of Chemical Engineering

Depositing User:

Team Library

Date Deposited:

14 Nov 2014 10:33

Last Modified:

14 May 2018 10:53

URI:

http://raiithold.iith.ac.in/id/eprint/763